Edge-trimming machine



E. GODIEN.

EDGE TRIMMING MACHINE.

APPLICATION FILED JULY 20. 1920.

Patented July 5, 1921.

2 SHEETS-SHEET l.

E. GODIEN.

EDGE TRIMMING MACHINE.

APPLICATION FILED JULY 20. 1920.

Patented July 5, 1921.

2 SHEETS-SHEET 2 Ephraim Godien sww fm.

EPHRATM GODIEN, OF MARLBORO, MASSACHUSETTS, ASSIGNOR OF TWENTY PER CENT.TO EXISTE BOUTHILLETTE,

OF MARLBORO, MASSACHUSETTS.

EDGE-TRHVEMING MACHINE.

Specification of Letters Extent.

Patented July 5, 1921.

Application filed July 20, 1920. 'Serial No. 397,650.

T 0 all whom it may concern Be it known that I, EPI-IRAIM GonmN, acitizen of the United States, residing at Marlboro, in the county ofMiddlesex State of Massachusetts, have invented a new and usefulEdge-Trimming Machine, of which the following is a specification.

This invention relates to a machine for finishing the edge trimmingoperation on a boot or shoe.

The principal objects of the invention are to provide a simple,practical, and effective mechanical device for trimming the edge of thesole up to the breast of the heel from the point at which the ordinaryrotary edge trimmer ceases to operate; and to provide for eflicientlycutting down in the plane of the heel breast the piece of leather thustrimmed off. More specifically, the invention involves the provision ofmeans for effectively locating or guiding the shoe dur ing the operationof the machine. This guiding is effected by a gage which enters thecrease between the sole and the upper, a stop that is adjustable andengages the side of the heel, and a fixed stop for engaging the breastof the heel, thus thoroughly fixing the position of the shoe withrespect to the cutter so that all shoes will be operated upon alike.

Another feature of the invention consists in the arrangement of themechanism by which the several operations are performed in such a way asto provide a double ma chine, having a right and left side designed tooperate continuously so that itwill notbe necessary to stop the machineor to select the shoes as to rights and lefts before operation. Themechanism provides a convenient construction by which the ordinaryrotary edge trimming knife and the rotary cutter for trimming the heelseat can be mounted in convenient position in respect. to the mechanismabove referred to, and an important feature of theinvention consists insuch relative arrangement of these cutters and the edge trimming meansthat the shoe can be manufactured without loss of time. Further objectsand advantages of the invention will appear hereinafter.

Reference is to be had tothe accompanying drawings, in whicl1- 4 Figure1 is a front elevation of a machine and line 53 of constructed inaccordance with this invention;

Fig. 2 is a plan of the driving shaft; F 1g. 3 1s a sectional view takenalong the Fig. 4 011 enlarged scale; and F 4 is an end elevation of themachine, showing the operating parts only.

The machine is shown as comprising a base 10 on which are mountedstandards 11 having bearings for the main driving'shaft 12. This .18operated from a pulley 13 or in any other desired way. It is providedwith two pulleys 14 and 15 which by means of belts, drive two pulleys 16and 1'? respectively on shafts 1S and 19. On the shaft 18 there is arotary cutter 20 of well known type for trimming the heel seat and onthe shaft 19 there is a cutter 21 of the rotary type for trimming theedge of the sole. These two shafts l8 and 19 are mounted on a standard22 which is bolted to or formed as a part of a bracket 23 whichconstitutes one of a pair, one being located on each end of the top ofthe base 10. It will be seen that these two rotary cutters which projectout in front of the end of the shaft 12 are located in convenient.position with respect to the same for use in performing their functionson a shoe held in position by the operator in the usual way.

The shaft 12, in addition to the two pulleys above mentioned, isprovided with an eccentric stud 25 on which are pivoted two links 26 and27, respectively. The parts operated by these links are the same on bothsides except that they are right and left handed and a description ofone will apply to the other. I

These two links 26 and 27 are arranged horizontally so that they formalmost a straight line with each other and their outer ends are eachconnected with the upper end of a lever 28. This lever is pivoted on astud 29 fixed to its respective bracket 23. Each of these levers isprovided with a downwardly extending arm 30 and with a horizontal arm31. On the lower arm 80 is fixed the edge trimming knife 32. This knifeis of a curved formation having its cutting edge located in a curvealmost concentric with the pivot stud 29, but slanted slightly therefromto provide the necessary relief. I have shown the knife as being fixedto a steel support 33 which itself is fixed to the arm 31, the knifebeing adjustably mounted to permit of its ready removal for sharpeningand replacement, and of its being moved sidewise before it is fastenedin position.

It will be seen by reference to Fig. 1 that the two knives 32 movetoward each other and that the operation is such, due to the connectionsabovedescribed, that when'one moves forward to perform its cuttingstroke, the other moves back. They are arranged far enough apart sothata shoe of the largest size can be operated upon by either withoutdanger of being interfered with by the other. V

The other arm 31 above mentioned is provided with a stud 35 inclosed ina longitudinal passage in it. It constitutes merely a pivot stud forconnection witha slide 36. There is no need of fixing the stud 35 in thearm '31, )rovided itis made, as shown, of a cylindrical form fitting acylindrical bore in the arm. The slide 36 is arranged nearly 7vertically and provided with a transverse cutter 37 which is designed tocut across the trimming which is cut out of the edge of the sole so asto detach it therefrom. It is adjustably mounted on the slide 36 andoperates in the plane of the heel breast. Its edge is curved andslantedflso that it has a drawing out. I i V The slide 36 is mounted ina. bracket40 fixed on the base 10 and provided with a slot 41 in whichthe slide 36 operates. In the present instance, the slide is shown ascylindrical and the passage is, of course, of the sameshape. Thisbracket also is provided with a stop 42 adjustably mounted and having anedge 43 adapted to engage the heel breast and limit the positionfof theshoe longitudinally. It is also provided with a gage 44 adapted to enterthe crease between the sole and the upper and serve to receive the shoewhen it is first put into a position to approach the operating cutter.This guides the shoe up to proper position until the heel breast engagesthe edge 43 of the stop 42. i V 1 The'position of the shoe is furtherfixed by the following mechanism The bracket 40 is provided with apassage 46 through it, parallel with the passage 41. Into the top ofthis screws a hollow cylinder 47 through which'passes the shank 48 of astop" 49. Thisstop is provided with a screw thread 50 on which is athumb nut 51, the bottom of which rests on the top of the stationary'turning the thumb nut 51. justment can be secured by turning thebutadjustable cylinder 47. Fitting in the recess on; the bottom of thiscylinder 47 is a spring 52 which presses against a pin 53 harried by thestep below. This spring,

therefore,,strongly forces the step down but will yield to permit of itsbeing adjusted by A further ad- 1 limit the motion of the shoe toeyardthe cutters in that direction. The operation of the device is shownpartly in Fig. 3.

The operator passes the shoe under the cutters 20 and 21 in successionto trim the heel seat and the edge of the sole. The lat-' ter operationobviously leaves a certain amount of leather near the heel onboth sideswhich can not be trimmed by the rotarycutter without injuring the heel.The operator performs these two operations, one after the other. 7proper position to insert into the left hand head of the machine, thatis, it is in a position parallel with that shown in dotted lines in Fig.3 when it leavesthe edge trimmer 21. All he has to do is to lower theshoe and move it inwardly slightly without turning it.

First he sets the gage 44' into the crease betion the shoe accuratelyand the operator,

after the machine 'isonce set. does not have to exercise any particularskill in operating the machine; Anunskilled operative can not gettheshoe much out of position because, as will be observed,.the stop 49. and44 are on'opposite sides of the breast of the heel and almostcontinuous. with each other. They prevent the rocking of the shoe if'the' operator merely keeps it in contact with both. The stop 42 locatesthe shoe longitudinally so that there is no danger of having the cutcome in the wrong place. WVhile he is getting the shoe into positionasabove described, the cutters are constantly operating. The action issuch that, the edge trimming cutter 32 moves throughout the length ofits stroke and then begins to draw back before the transverse cutter 3'?moves down into operative position. 7 In other words, they operatealternately. If it is necessary to allow the cutters to act more .theopposite side ofthe shoe, is to turn the toe downwardlyand half wayaround and bring the :shoe backunder the righthand head. The parts arein alinement and their When he has finished, the shoe is in location islearned very readily. Therefore, an operator without previous experiencecan become skilled in a very short time in transferring the shoe fromone position to the other to complete the operation on one shoe. Thesame thing may be said to be true with respect to the rotary edgetrimmer 21 and the rotary cutter 20.

In addition to the advantages incidentally brought out in describing theoperation of the machine, it will be observed that it is very simple andcompact, easily taken care of. that the knives are easily taken out andreplaced for sharpening and repairs, and that the adjustment of the heelside gage 49 is a very simple operation. The latter is important becausethe heels vary with the dif ferent sizes and the machine to be operatedthrough. the whole series of sizes.

I lay particular stress on the relative location of the parts because itpermits of the edge trimming of the shoe by the operator in the usualmanner with which it is to be supposed he is familiar, and thecompletion of the trimming operation without materially changing theposition of the shoe or shifting it from one hand to the other. This isan important feature in a machine of this kind where the time employedby the operator and machine is an important element in the cost of thearticle.

Although I have illustrated and described only a single form of theinvention, I am aware of the fact that modifications can be made thereinby any person skilled in the art without departing from the scope of theinvention as expressed in the claims. Therefore, I do not wish to beotherwise limited to the details of construction herein shown anddescribed, but what I do claim is 1. In a machine for finishing the trimming of the edge of a boot or shoe sole, the combination with an edgetrimming finishing knife and a transverse cutting knife workingsubstantially in the plane of the breast of the heel, of a stop forengaging the side of the heel, means for positioning said stop, meansfor yieldingly pressing said stop toward the heel, means for limitingits motion in that direction, and means for adjusting said limitingmeans.

2. In a machine for finishing the trimming of the edge of a boot or shoesole, the combination with an edge trimming finishing knife and atransverse cutting knife working substantially in the plane of therocable slide pivoted to said arm, and means for mounting saidtransverse cutting knife on the slide.

3. In a machine for finishing the trimming of the edge of a boot or shoesole, the combination with a shaft, of a stud eccentrically connectedtherewith, a pair of links extending therefrom in opposite directions,two opposite pivoted frames each connected with one of said links to berocked thereby, and a finishing cutter mounted on each and curved in anare substantially concentric with the axis on which its frame rocks,said cutters extending inwardly toward each other.

4. In a machine for finishing the trimming of the edge of a boot or shoesole, the combination with a shaft, of a stud eccentrically connectedtherewith, a pair of links extending therefrom in opposite directions,two opposite pivoted frames each connected with one of said links to berocked thereby, and a finishing cutter mounted on each and curved in anare substantially concentric with the axis on which its frame rocks,said cutters extending inwardly toward each other, whereby as one cuttermakes its cutting stroke inwardly the other will move backwardly in thesame general direction,

5. In a machine for finishing the trimming of the edge of a boot or shoesole, the combination with a shaft, of a stud eccentrically connectedtherewith, a pair of links extending therefrom in opposite directions,two opposite pivoted frames each connected with one of said links to berocked thereby, and two transverse cutters, one pivotally connected witheach frame.

In testimony whereof I have hereunto afiixed my signature.

EPI-IRAIM GODIEN.

